The purpose of this protocol is to test a new Electrical Impedance Myography (EIM) device and study its reliability and ability to differentiate ALS patients from healthy controls.
Investigators will study 10 ALS patients and at least 10 age-matched healthy controls between the ages of 21 and 85 years old. For all subjects, EIM measurements will be performed on four muscles: two in the upper and two in the lower extremities, using 8 different EIM sensors. Measurements will be repeated one time.
Study Type
OBSERVATIONAL
Enrollment
20
EIM measurements are taken by applying saline to the skin and placing a sensor on patients' muscles that will record electrical activity. Electrical current is generated by this machine, but patients will not be able to feel it. The electrical activity recorded is returned to the machine and analyzed by a computer.
Convergence Medical Devices
Boston, Massachusetts, United States
Muscle health as captured by EIM measurements
EIM measurements will be performed with several electrode arrays at one visit per patient. The data captured from ALS and healthy subjects will be used to refine and finalize electrode array design development for the EIM system.
Time frame: One time visit - Day 1
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